热化量子Rabi系统中嵌入的量子关联
Embedded Quantum Correlations in thermalized quantum Rabi systems
AI总结：
研究开放量子Rabi系统中量子关联对耦合强度、量子比特数和储层温度的依赖，发现其最大值与多量子比特Otto热机可提取功最小值直接对应，为设计基于多体系统的高级量子热机提供依据。
摘要：
我们研究了开放量子Rabi系统中嵌入的量子关联。具体而言，我们研究了量子关联如何依赖于耦合强度、量子比特数量和储层温度。我们数值计算了多达三个量子比特与单个场模式相互作用的量子关联。我们发现，嵌入的量子关联在给定的耦合强度下表现出最大值，该耦合强度与子系统数量和储层温度呈反比关系。我们探讨了这一特征如何影响多量子比特Otto热机的性能，发现了在量子比特-腔双分系统中可提取功的最小值与嵌入的量子关联的最大值之间存在直接对应的数值证据。此外，随着量子比特数量的增加，最大可提取功在更小的耦合强度值下达到。这项工作可能有助于设计更复杂的量子热机，这些热机依赖于具有嵌入关联的多体系统作为工作物质。
英文摘要：
We study the quantum correlations embedded in open quantum Rabi systems. Specifically, we study how the quantum correlation depends on the coupling strength, number of qubits, and reservoir temperatures. We numerically calculate the quantum correlations of up to three qubits interacting with a single field mode. We find that the embedded quantum correlations exhibit a maximum for a given coupling strength, which depends inversely on the number of subsystems and the reservoir temperature. We explore how this feature affects the performance of a many-qubit Otto heat engine, finding numerical evidence of a direct correspondence between the minimum of the extractable work and the maximum of the embedded quantum correlations in the qubit-cavity bi-partition. Furthermore, as we increase the number of qubits, the maximum extractable work is reached at smaller values of the coupling strength. This work could help design more sophisticated quantum heat engines that rely on many-body systems with embedded correlations as working substances.
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